Name of state: North Dakota
Name of fossil: Teredo-bored petrified wood
Description: The fossil looks like wood, but it's really a stone. Tiny holes have been drilled into it because of tiny clams, or "teredos".
Picture:
North Dakota State Fossil - Teredo Petrified Wood
North Dakota State Fossil - Teredo Petrified Wood

http://www.e-referencedesk.com/resources/state-fossil/north-dakota.html
Time existed: This existed in the Paleocene Epoch era about 60million years ago.
Preservation: The fossil was preserved by silica and quartz, as the rich mineral water petrified.
Who found the fossil/ why is it the state fossil: The fossil is very unique and popular with collectors. It also was not represented in the Smithsonian collection, so tourists and geologists rallied and named the fossil North Dakota's state fossil. It was one of the first states to name a state fossil.
Sources: Unknown (2012), State Symbols USA. Retrieved from: www.statesymbolsusa.org/NorthDakota/fossil-petrified-wood.html
Unknown (2012), North Dakota. nd.gov. Retrieved from: www.ndstudies.org/resources/symbold/teredo.html

By: Isabelle McEvilly